CVE-2025-68151— CoreDNS gRPC/HTTPS/HTTP3 servers lack resource limits, enabling DoS via unbounded connections and oversized messages
Quick assessment
Affected
coredns coredns
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
CoreDNS是CoreDNS社区的一个 DNS 服务器。 CoreDNS 1.14.0之前版本存在安全漏洞，该漏洞源于缺少资源限制控制，可能导致内存耗尽和服务崩溃。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-68151
Vulnerability Information
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Vulnerability Title
CoreDNS gRPC/HTTPS/HTTP3 servers lack resource limits, enabling DoS via unbounded connections and oversized messages
Source: CVE Program / CVE List V5
Vulnerability Description
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.0, multiple CoreDNS server implementations (gRPC, HTTPS, and HTTP/3) lack critical resource-limiting controls. An unauthenticated remote attacker can exhaust memory and degrade or crash the server by opening many concurrent connections, streams, or sending oversized request bodies. The issue is similar in nature to CVE-2025-47950 (QUIC DoS) but affects additional server types that do not enforce connection limits, stream limits, or message size constraints. Version 1.14.0 contains a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
CoreDNS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CoreDNS是CoreDNS社区的一个 DNS 服务器。 CoreDNS 1.14.0之前版本存在安全漏洞，该漏洞源于缺少资源限制控制，可能导致内存耗尽和服务崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-68151
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Patches & Fixes for CVE-2025-68151 (1)
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Merge commit from fork · coredns/coredns@0d8cbb1 · GitHub x_refsource_MISC
IV. Related Vulnerabilities
Same product: coredns
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CVE-2026-62299
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CVE-2026-33489
CoreDNS transfer plugin subzone ACL bypass via lexicographic
Same vendor: coredns
-
CVE-2026-62299
CoreDNS: rewrite-plugin EDNS0 response-revert nil-pointer pa -
CVE-2026-62309
CoreDNS: proxyproto plugin panics on PPv2 datagram with non- -
CVE-2026-62994
CoreDNS `k8s_external` headless AXFR can emit an empty trans -
CVE-2026-35579
CoreDNS TSIG authentication bypass on gRPC, QUIC, DoH, and D -
CVE-2026-33489
CoreDNS transfer plugin subzone ACL bypass via lexicographic
Same weakness: CWE-770
-
CVE-2026-72682
Allocation of Resources Without Limits or Throttling in Kiba -
CVE-2026-72652
Allocation of Resources Without Limits or Throttling in Kiba -
CVE-2026-56143
Allocation of Resources Without Limits or Throttling in Elas -
CVE-2026-33465
Allocation of Resources Without Limits or Throttling in Kiba -
CVE-2026-74835
inets,httpd: Memory Exhaustion via Unenforced max_body_size
V. Comments for CVE-2025-68151
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